Three dimensional image display device and method of driving the same

Abstract

A three dimensional image display device includes a display panel and a backlight unit. The display panel displays a left eye image and a right eye image of an image inputted to the display panel, in sequence. The backlight unit includes a plurality of backlight blocks. In the three dimensional image display device, based on at least one of depth information from the objects of the left eye and right eye images, and edge information from the object the left eye image or the right eye image, brightness of the plurality of backlight blocks are independently controlled.

1 . A three dimensional image display device, comprising:
 a display panel which displays a left eye image and a right eye image of an image inputted to the display panel, in sequence, the left eye image and the right eye image respectively including an object; and   a backlight unit comprising a plurality of backlight blocks,   wherein based on at least one of
 depth information from the objects of the left eye and right eye images, and 
 edge information from the object of the left eye image or the right eye image, 
   brightness of the plurality of backlight blocks is independently controlled.   
     
     
         2 . The three dimensional image display device of  claim 1 , wherein:
 when the object of the left eye image and the object of the right eye image are the same as each other, and   a difference between a gray of the object of the left eye image and a gray of the object of the right eye image, or a difference between a gray in an edge of the object of the left eye image and a gray in an edge of the object of the right eye image, is greater than a predetermined gray,   brightness of a backlight block corresponding to the object of the left eye image and the object of the right eye image decreases.   
     
     
         3 . The three dimensional image display device of  claim 2 , wherein:
 when the difference between the gray of the object of the left eye image and the gray of the object of the right eye image, or the difference between the gray in the edge of the object of the left eye image and the gray in the edge of the object of the right eye image, is smaller than the predetermined gray,   the brightness of the backlight block corresponding to the object of the left eye image and the object of the right eye image increases.   
     
     
         4 . The three dimensional image display device of  claim 3 , wherein:
 the left eye image and the right eye image comprise a first region without depth perception, and   a gray of the first region is compensated.   
     
     
         5 . The three dimensional image display device of  claim 4 , wherein:
 the brightness of the plurality of backlight blocks is independently controlled based on brightness distribution of the left eye image or brightness distribution of the right eye image.   
     
     
         6 . The three dimensional image display device of  claim 1 , wherein:
 a gray of the image inputted to the display panel is controlled based on at least one of   the depth information from the objects of the left eye and right eye images, and   the edge information from the object of the left eye image or the right eye image.   
     
     
         7 . The three dimensional image display device of  claim 6 , wherein:
 when the object of the left eye image and the object of the right eye image are the same as each other, and   a difference between a gray of the object of the left eye image and a gray of the object of the right eye image, or a difference between a gray in an edge of the object of the left eye image and a gray in an edge of the object of the right eye image, is greater than a predetermined gray,   the gray of the object of the left eye image or the gray of the object of the right eye image is controlled so as to reduce the difference between the gray of the object of the left eye image and the gray of the object of the right eye image.   
     
     
         8 . The three dimensional image display device of  claim 7 , wherein:
 when the difference between the gray of the object of the left eye image and the gray of the object of the right eye image, or the difference between the gray in the edge of the object of the left eye image and the gray in the edge of the object of the right eye image, is smaller than the predetermined gray,   the gray of the object of the left eye image and the gray of the object of the right eye image are not controlled.   
     
     
         9 . The three dimensional image display device of  claim 8 , wherein:
 the left eye image and the right eye image comprise a first region without depth perception, and   a gray of the first region is compensated.   
     
     
         10 . The three dimensional image display device of  claim 6 , wherein:
 the brightness of the plurality of backlight blocks is independently controlled based on brightness distribution of the left eye image or brightness distribution of the right eye image.   
     
     
         11 . The three dimensional image display device of  claim 10 , wherein:
 the backlight unit is on at least one side of the display panel in the plan view.   
     
     
         12 . The three dimensional image display device of  claim 1 , wherein:
 a gray of the image inputted to the display panel is controlled based on at least one of   a gray average value of the object of the left eye image or the right eye image,   a gray minimum value of the object of the left eye image or the right eye image,   a gray maximum value of the object of the left eye image or the right eye image,   a high gray average value of the object of the left eye image or the right eye image, and   a low gray average value of the object of the left eye image or the right eye image.   
     
     
         13 . The three dimensional image display device of  claim 12 , wherein:
 the left eye image and the right eye image comprise a first region without depth perception, and   a gray of the first region is compensated.   
     
     
         14 . The three dimensional image display device of  claim 12 , wherein:
 the brightness of the plurality of backlight blocks is independently controlled based on brightness distribution of the left eye image or brightness distribution of the right eye image.   
     
     
         15 . The three dimensional image display device of  claim 14 , wherein:
 the backlight unit is on at least one side of the display panel in a plan view.   
     
     
         16 . A driving method of a three dimensional image display device, the method comprising:
 displaying a left eye image and a right eye image of an image inputted to a display panel, in sequence; and   independently controlling brightness of a plurality of backlight blocks based on at least one of
 depth information from the objects of the left eye and right eye images, and 
 edge information from the object of the left eye image or the right eye image. 
   
     
     
         17 . The method of  claim 16 , wherein the independently controlling brightness of a plurality of backlight blocks comprises:
 decreasing the brightness of a backlight block corresponding to the object of the left eye image and the object of the right eye image when   the object of the left eye image and the object of the right eye image are the same as each other, and   a difference between a gray of the object of the left eye image and a gray of the object of the right eye image, or a difference between a gray in an edge of the object of the left eye image and a gray in an edge of the object of the right eye image, is greater than a predetermined gray.   
     
     
         18 . The method of  claim 16 , wherein:
 the brightness of the plurality of backlight blocks is independently controlled based on brightness distribution of the left eye image and brightness distribution of the right eye image.   
     
     
         19 . The method of  claim 18 , wherein:
 a gray of the image inputted to the display panel is controlled based on at least one of   the depth information from the objects of the left eye and right eye images, and   the edge information from the object of the left eye image or the right eye image.   
     
     
         20 . The method of  claim 18 , wherein:
 a gray of the image inputted to the display panel is controlled based on at least one of   a gray average value of the object of the left eye image or the right eye image,   a gray minimum value of the object of the left eye image or the right eye image,   a gray maximum value of the object of the left eye image or the right eye image,   a high gray average value of the object of the left eye image or the right eye image, and   a low gray average value of the object of the left eye image or the right eye image.